I would love some advice

I know it's a little stupid but I would love some advice about this. 
I've been dating this guy for about a month. He's funny, passionate, sweet, caring etc. but I just don't find him physically attractive. I'm very attracted to his personality but not his body. I want a real relationship with him but I can't get myself to have sex with him. I wanna stay with him but I don't know if I can build a relationship with someone I'm not physically attracted to.